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Bilbao

$520+ Cheap flights from Seattle (SEA) to Bilbao (BIO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — BIO
Jan 25 — Feb 11
Sat 1/25
Sat 2/1
1 adult, Economy
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Cheap flight deals from Seattle to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Bilbao (BIO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 20, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$645
(Gotogate)

One-way from

$520
(Flightnetwork)

Popular in

June

Cheapest in

February

Average price

$1,430
Provider with most accurate pricing for Seattle/Tacoma Intl-Bilbao flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Bilbao flights.
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From Seattle/Tacoma Intl to Bilbao
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One-way flight from Seattle/Tacoma Intl to Bilbao
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High demand for flights, 21% potential price rise
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Best time to find cheap flights, 4% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from Seattle to Bilbao

Cheapest flights from Seattle to Bilbao
Explore the most affordable flight options available from Seattle to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 20, 2025.

This Gotogate deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/410:35 amSEA - BIO
2 stops22h 30mAir Canada
Tue 3/116:45 amBIO - SEA
2 stops23h 15mAir Canada
Deal found 1/19$645
This Gotogate deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/55:45 amSEA - BIO
2 stops32h 10mMultiple Airlines
Wed 3/121:10 pmBIO - SEA
2 stops52h 40mMultiple Airlines
Deal found 1/18$647
This Ticket deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/512:35 pmSEA - BIO
1 stop13h 55mKLM
Wed 3/126:50 amBIO - SEA
1 stop13h 50mKLM
Deal found 1/19$658
This Gotogate deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/43:10 pmSEA - BIO
1 stop21h 40mLufthansa
Tue 3/117:40 amBIO - SEA
1 stop14h 40mLufthansa
Deal found 1/19$686
This United Airlines deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/52:00 pmSEA - BIO
1 stop23h 55mUnited Airlines
Wed 3/121:10 pmBIO - SEA
2 stops40h 20mUnited Airlines
Deal found 1/19$691
This Delta deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/57:28 amSEA - BIO
2 stops18h 47mDelta
Wed 3/126:50 amBIO - SEA
1 stop13h 50mDelta
Deal found 1/19$702
This American Airlines deal was found by Cheapflights users on 1/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/2110:24 amSEA - BIO
2 stops21h 31mAmerican Airlines
Fri 2/281:35 pmBIO - SEA
2 stops20h 21mAmerican Airlines
Deal found 1/18$739
This Orbitz deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/78:20 pmSEA - BIO
2 stops17h 55mIberia
Mon 4/145:35 pmBIO - SEA
2 stops38h 49mIberia
Deal found 1/19$956
This CheapOair deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/64:00 pmSEA - BIO
1 stop33h 00mScandinavian Airlines
Mon 9/155:15 pmBIO - SEA
2 stops53h 45mScandinavian Airlines
Deal found 1/19$1,002
This Gotogate deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/77:05 pmSEA - BIO
1 stop31h 00mTurkish Airlines
Tue 9/1612:05 pmBIO - SEA
1 stop38h 05mTurkish Airlines
Deal found 1/19$1,025
This Expedia deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/56:45 pmSEA - BIO
1 stop13h 45mAer Lingus
Tue 7/156:10 pmBIO - SEA
2 stops34h 08mAer Lingus
Deal found 1/19$1,513

Find flights from Seattle to Bilbao within your budget

Customize your flight search to find flights from Seattle to Bilbao that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 20, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 3/4

10:35 am-6:05 pm

2 stops22h 30m

Bilbao

Tue 3/11

6:45 am-10:00 pm

2 stops23h 15m

$645

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 3/5

5:45 am-10:55 pm

2 stops32h 10m

Bilbao

Wed 3/12

1:10 pm-9:50 am

2 stops52h 40m

$647

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 3/5

12:35 pm-11:30 am

1 stop13h 55m

Bilbao

Wed 3/12

6:50 am-12:40 pm

1 stop13h 50m

$658

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Tue 3/4

3:10 pm-9:50 pm

1 stop21h 40m

Bilbao

Tue 3/11

7:40 am-2:20 pm

1 stop14h 40m

$686

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 3/5

2:00 pm-10:55 pm

1 stop23h 55m

Bilbao

Wed 3/12

1:10 pm-9:30 pm

2 stops40h 20m

$691

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Wed 3/5

7:28 am-11:15 am

2 stops18h 47m

Bilbao

Wed 3/12

6:50 am-12:40 pm

1 stop13h 50m

$702

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Fri 2/21

10:24 am-4:55 pm

2 stops21h 31m

Bilbao

Fri 2/28

1:35 pm-12:56 am

2 stops20h 21m

$739

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Mon 4/7

8:20 pm-11:15 pm

2 stops17h 55m

Bilbao

Mon 4/14

5:35 pm-11:24 pm

2 stops38h 49m

$956

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sat 7/5

6:45 pm-5:30 pm

1 stop13h 45m

Bilbao

Tue 7/15

6:10 pm-7:18 pm

2 stops34h 08m

$1,513

SeattleBilbao

SEA - BIO

SEABIO

Seattle/Tacoma Intl

Sat 2/15

7:00 pm-11:10 am

1 stop31h 10m

Bilbao

Fri 2/21

12:10 pm-5:05 pm

1 stop37h 55m

$3,226

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

Showing 1-10 of 15 results
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Compare providers for flights from Seattle to Bilbao

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Bilbao in January.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Bilbao flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Bilbao flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Seattle-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Bilbao flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Bilbao flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Seattle to Bilbao

Get recent, data-driven insights about flights from Seattle to Bilbao including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Seattle to Bilbao?

Currently, January is the cheapest month in which you can book a flight from Seattle to Bilbao (average of $541). Flying from Seattle to Bilbao in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SEA to BIO?

Find hourly flight availability from Seattle to Bilbao. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 20, 2025.

It’s optimal to fly from Seattle to Bilbao in the morning. By choosing this option you can save up to 43% on the cost of your flight, compared to a flight at noon.

Rainfall in Bilbao by month

Plan your trip to Bilbao by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Bilbao ranges from 2.4 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Bilbao when rainfall is around 2.4 in.

Temperature in Bilbao by month

Plan your trip to Bilbao by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Bilbao, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Bilbao

Get insights into the airlines that provide service to Bilbao. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bilbao. Reviews last updated January 20, 2025.
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
8,982 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Turkish Airlines
7.3
Good
3,931 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Boarding

8.2

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Bilbao. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Seattle to Bilbao round-trip?

    Cheapflights users have booked flights from Seattle to Bilbao round-trip from $645. Other airlines that can offer you cheap pricing are KLM, from $658, and Lufthansa, from $690. Air Canada is 45% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Bilbao one-way?

    The cheapest airlines for a one-way flight from Seattle to Bilbao are KLM ($529), United Airlines ($539), and American Airlines ($1,363).

  • Can I find deals for flights from Seattle to Bilbao that include hotel bookings?

    Yes. In addition to deals on Seattle to Bilbao flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Bilbao?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Bilbao.

  • Can I find deals for business class flights from Seattle to Bilbao?

    Yes. Cheapflights offers flight deals from Seattle to Bilbao by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Seattle to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from Seattle to Bilbao (average of $541). Flying from Seattle to Bilbao in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Seattle to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to San Sebastian flights
Portland to Bilbao flights
Pasco to Bilbao flights

Top 5 airlines flying from Seattle to Bilbao

Discover the top 5 airlines that operate flights from Seattle to Bilbao. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$672Average$1,232FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$675Average$928FlexibilityNo cancel feeOn-time77%
DeltaCheapest$692Average$1,194FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$786Average$1,553FlexibilityNo cancel feeOn-time69%
KLMCheapest$789Average$1,182FlexibilityNo cancel feeOn-time75%
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